No, it's a new feature in 1.84 - if you look at the chart there's a blue circle around one of the planets, indicating the planet whose information is displayed on the System Information screen. You can move the circle along a route using alt-left/right cursor keys, and thus get information for any system along the route.

On the F7 system info screen, use the left and right arrow keys for info on the previous/next system on your current route. The home key will show info for the home system and the end key that for the target system.

I usually run with the blue ring set to the next drop/stopover/repair system - if it's beringed on F6, I'm going in.